蛇腹式弹性夹具是无侧隙夹具的一种，这种夹具的关键在于加工理想的蛇腹套。实践证明，当蛇腹套受轴向压缩产生径向扩张后的外圆柱表面与内孔的同轴度取决于弹性变形的一致性，而变形的一致性取决于胀套的几何形状、弹性变形部分壁厚的均匀、热处理的硬度及内部组织等，其中轴 The belly elastic clamp is a kind of backlash-free clamp, the key of this clamp is to process the ideal bellows. It has been proved that the coaxiality between the outer cylindrical surface and the inner hole after radial compression of the bellows caused by axial compression depends on the consistency of the elastic deformation and the consistency of the deformation depends on the geometry of the expansion sleeve and the elastic deformation part Wall thickness uniformity, heat treatment, hardness and internal organization, etc. Axis